Issue #204 (Crash when trying to save an empty server):
Empty UITextField in iOS 7 returns “empty description” object and everything is OK. Meanwhile iOS 6 returns “nil” and tries to set it as value in dictionary, which causes app crash.
So it is better to check UITextField text and in case if it is empty, return @“”.
Merge pull request #205 from zdanovs/upstream

Issue #204 (Crash when trying to save an empty server)